Malicious PDF — malware analysis report

Static analysis result for SHA-256 1390e0787e5359b7…

MALICIOUS

PDF

43.6 KB Created: 2020-10-26 15:49:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: cc360bb225dcc03eb05b5f97ef2d8da3 SHA-1: 4fcc2363160209d50a6d0c1670dbf6bbdd8ca659 SHA-256: 1390e0787e5359b7c481855b9bb22daefb4f66306c3aee58b1f5d68a48600574
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/strik?keyword=resumen+de+la+ratonera+rincon+del+vago In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376088/normal_5f8a2238c828a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373778/normal_5f8b3b578c2e9.pdfIn PDF document text
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/89f91eb.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/185513.pdfIn PDF document text
    • https://dudererojafa.weebly.com/uploads/1/3/4/3/134362298/996d7e6c11.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/bff4af965a333.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/fd1b3209b9d.pdfIn PDF document text
    • https://weropejo.weebly.com/uploads/1/3/4/3/134321986/gemupofuzewevik-nofafabemajonuv.pdfIn PDF document text
    • https://luvumape.weebly.com/uploads/1/3/4/4/134438520/214a75f375ee1bc.pdfIn PDF document text
    • https://kivepuwepadile.weebly.com/uploads/1/3/4/3/134392404/9442c0e.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000680a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000680a.bin)
    • https://cdn.shopify.com/s/files/1/0433/6916/9054/files/migubuxikujivit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0699/2799/files/microeconomic_household_theory_of_fertility.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9807/7891/files/jilojatapikuwoxasise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0236/4579/files/pubidejimemanovogufixerek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4779/2021/files/minoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2469/7509/files/muvemapominovikijikixevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/1622/2406/files/derniere_danse_piano_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a251ddfa-a696-4792-987e-163b107d242b/litizomatedexokowigefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9312b5d8-0411-4dd1-997e-c7aa05a2a7d5/bonnie_goff_ucla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b60b8e0f-1fdc-4a74-ac39-52f450fc91f9/9._snf_fizik_ivme_formC.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/119eb709-27c6-4efe-b749-1301fd870d20/6333865670.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off0000680a.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000680a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x680A 5324 bytes
SHA-256: 565a8138cd4b156422af0471948201ccf9ec855ec1dcf766dbce408fcf86c9a5
font_01_sfnt_off00007a16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A16 11316 bytes
SHA-256: 221e405a2fb88d8c41ad1a42dfe3216a197e9b64eecfc2e56af6d94497cb1bf8

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